| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 2010 VMware, Inc. All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| #ifndef TRANSFORM_FEEDBACK_H |
| #define TRANSFORM_FEEDBACK_H |
| |
| #include <stdbool.h> |
| #include "bufferobj.h" |
| #include "compiler.h" |
| #include "glheader.h" |
| #include "mtypes.h" |
| |
| struct _glapi_table; |
| struct dd_function_table; |
| struct gl_context; |
| |
| extern void |
| _mesa_init_transform_feedback(struct gl_context *ctx); |
| |
| extern void |
| _mesa_free_transform_feedback(struct gl_context *ctx); |
| |
| extern void |
| _mesa_init_transform_feedback_functions(struct dd_function_table *driver); |
| |
| extern unsigned |
| _mesa_compute_max_transform_feedback_vertices( struct gl_context *ctx, |
| const struct gl_transform_feedback_object *obj, |
| const struct gl_transform_feedback_info *info); |
| |
| |
| /*** GL_EXT_transform_feedback ***/ |
| |
| void GLAPIENTRY |
| _mesa_BeginTransformFeedback_no_error(GLenum mode); |
| |
| extern void GLAPIENTRY |
| _mesa_BeginTransformFeedback(GLenum mode); |
| |
| void GLAPIENTRY |
| _mesa_EndTransformFeedback_no_error(void); |
| |
| extern void GLAPIENTRY |
| _mesa_EndTransformFeedback(void); |
| |
| extern bool |
| _mesa_validate_buffer_range_xfb(struct gl_context *ctx, |
| struct gl_transform_feedback_object *obj, |
| GLuint index, struct gl_buffer_object *bufObj, |
| GLintptr offset, GLsizeiptr size, bool dsa); |
| |
| extern void |
| _mesa_bind_buffer_base_transform_feedback(struct gl_context *ctx, |
| struct gl_transform_feedback_object *obj, |
| GLuint index, |
| struct gl_buffer_object *bufObj, |
| bool dsa); |
| |
| void GLAPIENTRY |
| _mesa_BindBufferOffsetEXT_no_error(GLenum target, GLuint index, GLuint buffer, |
| GLintptr offset); |
| |
| extern void GLAPIENTRY |
| _mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer, |
| GLintptr offset); |
| |
| void GLAPIENTRY |
| _mesa_TransformFeedbackVaryings_no_error(GLuint program, GLsizei count, |
| const GLchar *const *varyings, |
| GLenum bufferMode); |
| |
| extern void GLAPIENTRY |
| _mesa_TransformFeedbackVaryings(GLuint program, GLsizei count, |
| const GLchar * const *varyings, |
| GLenum bufferMode); |
| |
| extern void GLAPIENTRY |
| _mesa_GetTransformFeedbackVarying(GLuint program, GLuint index, |
| GLsizei bufSize, GLsizei *length, |
| GLsizei *size, GLenum *type, GLchar *name); |
| |
| |
| |
| /*** GL_ARB_transform_feedback2 ***/ |
| extern void |
| _mesa_init_transform_feedback_object(struct gl_transform_feedback_object *obj, |
| GLuint name); |
| |
| struct gl_transform_feedback_object * |
| _mesa_lookup_transform_feedback_object(struct gl_context *ctx, GLuint name); |
| |
| extern void GLAPIENTRY |
| _mesa_GenTransformFeedbacks(GLsizei n, GLuint *names); |
| |
| extern void GLAPIENTRY |
| _mesa_CreateTransformFeedbacks(GLsizei n, GLuint *names); |
| |
| extern GLboolean GLAPIENTRY |
| _mesa_IsTransformFeedback(GLuint name); |
| |
| void GLAPIENTRY |
| _mesa_BindTransformFeedback_no_error(GLenum target, GLuint name); |
| |
| extern void GLAPIENTRY |
| _mesa_BindTransformFeedback(GLenum target, GLuint name); |
| |
| extern void GLAPIENTRY |
| _mesa_DeleteTransformFeedbacks(GLsizei n, const GLuint *names); |
| |
| void GLAPIENTRY |
| _mesa_PauseTransformFeedback_no_error(void); |
| |
| extern void GLAPIENTRY |
| _mesa_PauseTransformFeedback(void); |
| |
| void GLAPIENTRY |
| _mesa_ResumeTransformFeedback_no_error(void); |
| |
| extern void GLAPIENTRY |
| _mesa_ResumeTransformFeedback(void); |
| |
| static inline bool |
| _mesa_is_xfb_active_and_unpaused(const struct gl_context *ctx) |
| { |
| return ctx->TransformFeedback.CurrentObject->Active && |
| !ctx->TransformFeedback.CurrentObject->Paused; |
| } |
| |
| extern bool |
| _mesa_transform_feedback_is_using_program(struct gl_context *ctx, |
| struct gl_shader_program *shProg); |
| |
| static inline void |
| _mesa_set_transform_feedback_binding(struct gl_context *ctx, |
| struct gl_transform_feedback_object *tfObj, GLuint index, |
| struct gl_buffer_object *bufObj, |
| GLintptr offset, GLsizeiptr size) |
| { |
| _mesa_reference_buffer_object(ctx, &tfObj->Buffers[index], bufObj); |
| |
| tfObj->BufferNames[index] = bufObj->Name; |
| tfObj->Offset[index] = offset; |
| tfObj->RequestedSize[index] = size; |
| |
| if (bufObj != ctx->Shared->NullBufferObj) |
| bufObj->UsageHistory |= USAGE_TRANSFORM_FEEDBACK_BUFFER; |
| } |
| |
| static inline void |
| _mesa_bind_buffer_range_xfb(struct gl_context *ctx, |
| struct gl_transform_feedback_object *obj, |
| GLuint index, struct gl_buffer_object *bufObj, |
| GLintptr offset, GLsizeiptr size) |
| { |
| /* Note: no need to FLUSH_VERTICES or flag NewTransformFeedback, because |
| * transform feedback buffers can't be changed while transform feedback is |
| * active. |
| */ |
| |
| /* The general binding point */ |
| _mesa_reference_buffer_object(ctx, |
| &ctx->TransformFeedback.CurrentBuffer, |
| bufObj); |
| |
| /* The per-attribute binding point */ |
| _mesa_set_transform_feedback_binding(ctx, obj, index, bufObj, offset, size); |
| } |
| |
| /*** GL_ARB_direct_state_access ***/ |
| |
| extern void GLAPIENTRY |
| _mesa_TransformFeedbackBufferBase(GLuint xfb, GLuint index, GLuint buffer); |
| |
| extern void GLAPIENTRY |
| _mesa_TransformFeedbackBufferRange(GLuint xfb, GLuint index, GLuint buffer, |
| GLintptr offset, GLsizeiptr size); |
| |
| extern void GLAPIENTRY |
| _mesa_GetTransformFeedbackiv(GLuint xfb, GLenum pname, GLint *param); |
| |
| extern void GLAPIENTRY |
| _mesa_GetTransformFeedbacki_v(GLuint xfb, GLenum pname, GLuint index, |
| GLint *param); |
| |
| extern void GLAPIENTRY |
| _mesa_GetTransformFeedbacki64_v(GLuint xfb, GLenum pname, GLuint index, |
| GLint64 *param); |
| |
| #endif /* TRANSFORM_FEEDBACK_H */ |